Machine for operating upon the heel-portions of shoes



March 15, 1938. L -r 2,318,949

MACHINE FOR OPERATING UPON THE HEEL PORTIONS OF SHOES Filed Aug. 28,1956 s Shets-Sheet 1 a: 'EI

fix 2a m i i 18- i A/VE NTUFK M M f.

March 15, 1938. BRANDT 2,fll@,94

MACHINE FOR OPERATING UPON THE HEEL PORTIONS 0F SHOES Filed Aug. 28,1936 s Sheets-Sheet? v [WE/v 717R EM); 03% 7 F1 7 "W 11% QW F. L. BRANDTMarch 15, 1938.

3 Sheets-Sheet 3 Filed Aug. 28, 1956 MACHINE FOR OPERATING UPON THE HEELPORTIONS OF SHOES Je 4, 4% M Patented Mar. 15, 1938 UNITED STATES guestsPATENT @FFME MACHINE FOR OPERATING UPON THE HEEL-PORTIDNS 0F SHOESApplication August 28, 1936, Serial No. 98,372

19 Claims.

This invention relates to machines for operating upon the heel-portionsof shoes, it being especially directed to those which are employed inconnection with the attachment of heels by fastenings driven from withinthe shoes. This machine may be utilized for performing the method ofheel-attaching, with the production of the shoe, as disclosed andclaimed in the application filed in my name in the United States PatentOflice on August 28, 1936, Serial No. 98,371.

Shoe-heels may be secured tothe heel-seats of shoes in various ways.Different numbers of nails may be driven in groups along lines generallyfollowing the contour of the periphery of the heel-cup; to these theremay be added or em ployed alone a central nail or other fasteninginserted by the heeling machine; or such a fastening as a screw may beapplied, either with or without the previous formation of a receivingopening. My invention has as an object the provision of a flexible andefficient apparatus by which such different heehattaching operations maybe performed fully or partially and without the application of excessiveforces which might cause injury to the work or to the machine.

In the attainment of the above object, I com hips with a jack or othershoe-support through the top of which open an inner passage and a set ofouter passages, a compound plunger reciprocating in the support andoperating drivers in the support-passages. The drivers in the outerpassages preferably rise to the passage-openings, so they are adaptedfor the insertion of attaching nails with their heads sunk in thematerial of the heel-seat. The inner driver, which may be used alone ifdesired, has a portion which terminates its upward movement asubstantial distance below the opening of its passage and is arranged toreceive at its upper extremity different operating devices which furnishdriver-terminals. These devices may consist of a head which is adaptedto insert a driven fastening, or it may take the form of a punch bywhich an opening is produced in the heel-seat of a shoe and in a heelclamped upon the heel-seat by a pressure-abutment co-operating with thesupport. It will be evident that the drivers are capable of utilizationin different groups, and that the size and character of the groups willalter the forces which must be applied to accomplish the desired result.These forces may be so great as to produce harmful effects. If thepressure upon the work is sufficient to hold the heel firmly upon theheel-seat to prevent the nails from being crippled and to insure a tightcrease, the heel maybe crushed, its

(Ci. l2---42) cover deformed or excessive strain thrown upon themachine. To avoid this difiiculty, my compound driver-plunger has twoindependently movable portions carrying, respectively, the inner andouter drivers. Because of this independence, the plunger-portions may bereciprocated at different times in the operating cycle, and thus only apart of the total stress applied at any one time. This may be kepteasily within safe limits. Herein are shown a tubular plunger-portionfor the outer drivers reciprocating in the frame, this havingreciprocating within it a plunger-portion for the inner driver. If apunch is to be used as the terminal device upon the inner driver, theinner plunger-portion is also tubular to allow the discharge of thewaste. This waste may be received by a deflector and thus kept clear ofthe actuating mechanism. In the present instance, this actuatingmechanism is furnished by a cam and a crank which may act respectivelyupon the outer and inner plunger-portions and are carried by a drivingshaft. The angular relation of these two actuating elements will givethe desired timing of the driver-groups in the operating cycle. Means isprovided whereby the effect of the cam is transmitted, withoutinterference, to an element of the machine.

A particular embodiment of the invention is illustrated in theaccompanying drawings, in

which Fig. 1 is a partial, vertical, transverse section through theimproved machine;

Fig. 2, a similar View in a plane at right-angles to Fig. 1;

Fig. 3, an enlarged, transverse section through the jack-top, showingaset of nails being inserted by the outer drivers, while the inner driverwith 1936. It is to be understood, however, that this is in nowayessential but simply furnishes a convenient arrangement. Of this machinethere appears a portion of the frame it having journaled in it ahorizontal driving shaft i2 by which a driver-plunger P is reciprocatedvertically in the frame At the top of the frame a shoe-supporting jackI4 is mounted, and co-operating with this jack is the usualheel-pressure-abutment I6 carried by side-rods l3, l8 guided in theframe at opposite sides of the jack. Fluid means (not illustrated) joinsthe plunger to the heel-abutment in such a manner that the pressureapplied by the latter varies with the resistance encountered by theplunger during the driving stroke.

I form the plunger P in two parts, an outer portion 20, which is guidedfor vertical reciprocation in the frame and which is tubular, and aninner portion 22 reciprocating within the outer portion. Upon a sleeve24 threaded into the upper extremity of the plunger 20 is separablycarried a driver-plate 25, and into this plate is threaded forindividual, vertical adjustment a set of outer drivers 28, each having alock-nut 30. This set may be five in number. The inner plunger 22 isthreaded at its upper end to receive an inner driver 32. When thedrivers 28 of the outer set are in their raised position (Fig. 3), towhich they are carried by the plunger 29, their upper ends, upon whichthe heads of the nails N to be inserted rest, lie approximately at theopenings through the jack-top of passages 34 in which these driversoperate. The relation is preferably such that the nails are slightlysunk in the heelseat-material. The driver 32 has a. threaded end 36which is substantially below the opening in the jack-top of an innerpassage 38 in which it is reciprocated by the plunger-portion 22. Thisthread is to permit it to receive different terminal-portions. One ofthese end-portions may be, as appears in Figs. 1 to 4, inclusive, atubular punch 42, and since such a punch is to be employed and willproduce within it waste-pieces, the driver 32 is also preferablytubular, as is the plunger-portion 22. The punch is generallycylindrical and has at its upper extremity the customary cutting edge44. It is shouldered at 46 to engage the end of the driver 32, eitherdirectly or through interposed washers 48 by which the depth ofprojection of the punch into the work is controlled. When thus adjusted,the punch in the raised position of its plunger (Fig. 4) enters the heelto be attached to the proper depth to receive an attaching screw. Thediameter of the punch corresponds to that of the opening for the screw.Instead of a punch, the terminal-portion of the driver 32 may consist,as shown in Fig. 5, of a head 50 secured in place and adjusted in thesame manner as the punch. The driver member 32, 5!] is preferably ofgreater diameter than the drivers 28, being adapted to support andinsert a relatively large fastening F. Such a fastening is illustratedin Figs. 5 and 6. It is tubular and has at one extremity a head h ofgreater diameter than the shank or body b and, at the opposite end, areduced, penetrating edge e. To increase the retentive effect of thefastening F, it may be provided with a circumferential projection orprojections extending along the shank from the edge e. Preferably, thisportion is in the form of a continuous helix p.

in driving a considerable number of nails for the attachment of heels,or when the attaching operations include the driving into the work of amember of relatively large diameter, as the terminal-punch 42 of thedriver 32 or the fastening-F inserted by the head 56 of the driver 32,the clamping force exerted by the heel-abutment 16 must be considerableto prevent the upward thrust of the fastenings from displacing, theheel. Were this to occur, the nails might not be driven properly, andthere might result a gaping crease.

On the other hand, with adequate pressure to resist the thrust of thedrivers, the heel may be crushed or its covering wrinkled. In any event,the strain upon the machine elements is heavy. I avoid such effects bydividing the driver-action so it occurs during different periods in theoperating cycle. Upon the driving shaft 12 isa cam consisting of spacedsections til, 6G. The shaft is also sectional, the cam-sections beingcarried by the adjacent, spaced ends of the shaft. Joining the inn-erfaces of the cam-sections is an eccentrically placed crank-pin 52. Theouter and inner plungers have lower terminal-portions t4 and 66,respectively. The former portion is guided in the ire. he and isprovided with spaced ends to which may be attached wear-plates E8, 58resting upon the cam-sections if 59. The plunger 2! with its drivers 28are held down, with the wearplates urged toward the cam, by anexpansionspring it surrounding the body of the plunger and interposedbetween the terminal-portion G4 and. the frame in. The terminal-portion55 of the inner plunger 22 is guided within its companion portion 54 andis joined by a connecting rod or link 12 to the crank-pin 552. The upperend of the link comes directly beneath the passage in the plunger 22,which is alined with the passage in the driver 32, and in the punch 42when the latter is in use. I prefer to furnish upon this end of the linklateral extensions i4, 14 transversely hollowed to trough-shape. Therelation of the crank-pin to the portion of the cam of maximum diametermay be such that they cause the extreme upward movements of the drivers28 and 32, respectively, substantially 180 apart during the rotation ofthe driving shaft [2. Therefore, while the drivers 28 are inserting aload of nails the driver 32 is resting and conversely.

In the machine of the previously mentioned patent, a vertical rod hereindesignated as 15 and movably mounted in the frame, is normally raised bya spring "ii and is acted upon by the cam of the plunger-operatingmechanism to control the valve mechanism of the apparatus. The sections613, 68 of the cam spaced from each other by the crank-pin 62 in thepresent apparatus, are carried out of vertical alinement with the rod.To render the sections effective to actuate the rod, there is pivotedupon the frame at one side of the rod an arm 18 which, at its inner end,is sufficiently wide to contact with both cam-sections at its upper faceand at its lower face rests upon the rod. The cam-action is transmittedthrough the arm to the rod without the balance of the force appliedbeing disturbed by the lateral dis placement of the sections.

It will be assumed that in the use of the apparatus it is desired toinsert a heel H to be attached to a shoe S supported by the jack M, aload of nails N and in the same operating cycle to produce a hole in theheel to receive a screw to be applied later. The punch 42. forms theterminal of the driver 32, and a load of nails will be supplied to thepassages 34 resting upon the ends of the drivers 28. At this time, allof said drivers are lowered, as appears in Figs. 1 and 2. With the shaftl2 rotating as indicated by the arrow in Fig. 1., the cam 68 will firstelevate the portion 28 of the plunger P. The arm '18 is at the same timefreed and the rod it raised by its spring 11 tocause the abutment Hi topress the heel upon the heel-seat of the shoe.

The drivers 28 force the nails N through the heel seat of the shoe intothe heel. During this time, the crank-pin 62 is lowering the portion 22of the plunger P with its-driver-punch 32, 42. After the insertion ofthe nails N has been completed, the cam 60 allows the spring 1!] tolower the plunger-portion 29, while the elevation of the plunger-portion22 and the driver 32 begins under the influence of the crank-pin 62. Thepunchterminal is driven through the heel-seat-material of the shoe intothe heel to the extent necessary to produce a hole of the proper depthto facilitate the later insertion of a screw. When the crank-pin passesthe center and begins to descend, the punch is lowered by the driver.The frictional force exerted upon the heel-substance within the punch isgreater than the resistance offered by the connection between materialsurrounded by the punch and the body of the material. Said connection istherefore broken, and the descending punch removes the pill from thework to be ejected by the pressure upon it of succeeding pieces. Thesepieces fall through the passages in the driver 32 and plunger 22 uponthe deflector Hi and are directed thereby from the machine. During thissecond portion of the operating cycle, the cam 6 frees the rod it toallow the abutment iii to be elevated, and the shoe with its nailed heeland the formed screwhole may be removed from the jack. Because of theseparation of the operations into groups, the forces applied to the workand the burdens put upon the work-retaining and fastening-drivingmechanisms are divided, and the danger of injury is minimized.

If a center fastening, such as the tubular device F, is to be driven, aswell as the nails N, the punch 32 is unscrewed and the driver-head 58substituted. The operation may be precisely as before, save that whenthe nails are supplied to the drivers 28, a fastening is also placedupon the driver-head. When the work has been positioned, and the machinestarted, the nails are inserted during the first portion of theoperatingcycle and the single large fastening during the second portion.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is:

1. In a machine for operating upon the heelporticns of shoes ashoe-support having open ing through the top a set of outer passages andan inner passage, a compound plunger comprising a plurality of elementsand reciprocating in the support, a set of drivers operated by anelement I of the plunger in the outer passages and each upon elevationof the plunger rising to its passage-opening, and a driver-portionoperated by another element of the plunger in the inner passage andterminating its upward movement a substantial distance below the openingof its passage, the inner driver-portion being arranged to receive atits upper extremity diiterent oper- 'ating devices.

2. In a machine for operating upon the heelportions of shoes, ashoe-support having opening through the top a set of outer passages andan inner passage, a compound plunger reciprocating in the support andconsisting of two independently movable portions, a set of driversoperated by one portion of the plunger in the outer passages and eachupon elevation of the plunger rising to its passage-opening, and adriver-portien operated by the other portion of the plunger in the innerpassage and terminating its upward movement a substantial distance belowthe opening of its passage, the inner driver-portion being arranged toreceive at its upper extremity diiierent operating devices. v

3. In a machine for operating upon the heel portions of shoes, ashoe-support having opening through the top a set, of outer passages andan inner passage, a compound plunger comprising a plurality of elementsand reciprocating in the support, a set of drivers operated by anelement of the plunger in the outer passages and each upon elevation ofthe plunger rising to its passage-opening, and a driver operated byanother element of the plunger in the inner passage and terminated by atubular punch emerging through its passage-opening.

portions of shoes, a shoe-support having opening hrough the top a set ofouter passages and an inner passage, a compound plunger comprising aplurality of elements and reciprocating in the support, a set'of driversoperated by an element of the plunger in the outer passages and eachupon elevation of the plunger rising to its passage-opening, and adriver-portion operated by another element of the plunger in the innerpassage and terminating its upward movement a substantial distance belowthe opening of its passage and having secured to it a head rising intosubstantially the same relation to its passageopening as the outerdrivers.

5. In a machine for operating upon the heel" portions of shoes, 2.shoe-support provided with a passage opening through its top, apressureabutrnent co-operating with the support to clamp a heel upon asupported shoe, a plunger reciproeating in the support, and a drivercarried by i the plunger and operating in the passage, said driverterminating in a tubular movable within the support-passage anddischarging therethrough the pills produced.

6. In a machine for operating upon the heelportions of shoes, ashoe-support having passages opening through the top, a plunger havingportions reciprocating in the support and each movable independently ofthe other during action upon the work, and drivers movable by theplunger-portions in the passages.

7. In a machine for operating upon the heelportions of shoes, a shoesupport provided with passages opening through its top, plunger havingindependently movable portions reciprocating in the support, driversmovable by the plunger-portions in the passages, and means forreciprocating the plunger-portions in opposite directions during actionupon the work.

8. In a machine for operating upon the heelportions of shoes, ashoe-support having'passages opening through its top, a plunger havingindependently movable portions reciprocating in the support, and driversmovable by the plungerportions in the passages, one of said drivers andits plunger-portion being tubular.

9. In a machine for operating upon the heelportions of shoes, ashoe-support having passages opening through its top, a plunger havingindependently movable portions reciprocating in the support, driversmovable by the plunger-portions in the passages, one of said drivers andits plunger-portion being tubular, and a deflector to which the passagesthrough the tubular plunger and driver deliver.

10. In a machine for operating upon the heelportions ofshoes, ashoe-support having a passage, a plunger reciprocating in the support,means for reciprocating the plunger, a driver movable by the plunger inthe passage, and a defiector to which the passage through the driverdelivers, said deflector being carried by an element of thereciprocating means.

11. In a heel-attaching machine, a frame, a jack mounted thereon andprovided with passages, an outer tubular plunger-portion reciprocatingin the frame, an inner plunger-portion reciprocating within the outerportion, and drivers carried by both plunger-portions and being movablein the jack-passages.

12. In a heel-attaching machine, a frame, a jack mounted thereon andprovided with passages, an outer tubular plunger-portion reciproeatingin the frame, an inner plunger-portion reciprocating within the outerportion, drivers carried by both plunger-portions and being movable inthe jack-passages, and means for actuating the plunger-portions torender the drivers of said portions effective at different times in anoperating cycle.

13. In a heel-attaching machine, a frame, a jack mounted thereon andprovided with passages, an outer tubular plunger-portion reciprocatingin the frame, an inner tubular plungerportion reciprocating within theouter portion, nail-drivers carried by the outer portion, and a tubularpunch carried by the inner portion, the drivers and punch being movablein the jackpassages.

14. In a heel-attaching machine, a frame, a jack mounted thereon andprovided with passages, two plunger-portions reciprocating in the frameand having drivers operating in the jackpassages, a shaft journaled inthe frame, a cam upon the shaft acting upon one plunger-portion, and acrank-pin revoluble by the shaft and joined to the otherplunger-portion.

15. In a heel-attaching machine, a frame, a jack mounted thereon andprovided with passages, two plunger-portions reciprocating in the frameand having drivers operating in the jackpassages, a shaft journaled inthe frame, a cam having sections spaced from each other upon the shaft,said sections contacting with one plungerportion, a crank-pin connectingthe cam-sections, and a link joining the crank-pin to the otherplunger-portion.

16. In a heel-attaching machine, a frame, a jack mounted thereon andprovided with passages, an outer tubular plunger-portion reciprocatingin the frame and having spaced downward extensions, an innerplunger-portion reciproeating within the tubular portion and having aterminal lying between the extensions of the outer plunger-portion, theplunger-portions having drivers operating in the jack-passages, a shaftjournaled in the frame, a cam having sections spaced from each otherupon the shaft and contacting with the plunger-extensions, a crank-pinconnecting the cam-sections, and a link joining the crank-pin to theterminal of the inner plung er-portion.

17. In a heel-attaching machine, a frame, a jack mounted thereon andprovided with passages, an outer tubular plunger-portion reciproeatingin the frame, an inner tubular plungerportion reciprocating in the outerportion, the plunger-portions having drivers operating in thejack-passages, the driver of theinner portion terminating in a punch, acam for contacting with the outer portion, a crank and link foractuating the inner portion, and a deflector for the waste produced bythe punch, said deflector being carried by the link.

18. In a heel-attaching machine, a frame, a

jack mounted thereon and provided with passages, two plunger-portionsreciprocating in the frame and having drivers operating in thejackpassages, a shaft journaled in the frame, a cam having sectionsspaced from each other upon the shaft, said sections contacting with oneplungerportion, a crank-pin connecting the cam-sections, a link joiningthe crank-pin to the other plunger-portion, a member arranged to controlan element of the machine and movable beneath the crank-pin, and atransmitting member resting upon the controlling member and actuated bythe cam to move said controlling member.

19. In a heel-attaching machine, a frame, a jack mounted thereon andprovided with passages, two plunger-portions reciprocating in the frameand having drivers operating in the jackpassages, a shaft journaled inthe frame, a cam having sections spaced from each other upon the shaft,said sections contacting with one plunger-portion, a crank-pinconnecting the cam-sections, a link joining the crank-pin to the otherplunger-portion, a rod sliding in the frame beneath the crank-pin andarranged to control an element of the machine, and an arm pivoted uponthe frame at one side of the rod and resting thereon and engaged by bothcam-sections to actuate the rod.

FRANCIS LOW BRANDT.

